I do believe my idea is way too complex for today's technology (and financial/time constraints), but something much simpler could be done, by the community, if the right tools are included in the game.
Like an easy editor to set up maps, settings, and units (a battle creation feature for MP). This way we could hold our own MP campaigns, setting up battles for others to play using predetermined units. If there was a simple campaign map which would allow us to input/keep track of stats (A campaign map which would allow us to add units and buildings, which would keep track of units and their stats, upgrade koku amounts etc . and generate a list of units and their individual stats for plugging into the battle editor.) This would allow someone to easily host an actual MP campaign, without having to manually keep track of all the stats and upgrade a website with them. I remember my couple attempts at an MP campaign, based on the actual STW1 rules. It was an enormous amount of work keeping track of all the stats. Any tool which could help make this task easier would go a long ways to making a community campaign possible.
Even an empty campaign map which would allow us to easily add/subtract/move units around it, would be a great asset towards making a large scale MP campaign possible for the community.
Bookmarks